How do I save data entered in a list box at run time without resorting to a text file or having to deal with the overhead of a table? I am using 16bit Delphi 1.
The easiest way to approach this is to use a TFileStream and TStream’s ReadComponent and WriteComponent methods to open and save your saved list box. For instance, this is something that I use in my own code:
procedure TConfigForm.StreamList(Read : Boolean);var strm : TFileStream;begin //if Read then read the file off disk and load //the list box. Otherwise, write it to disk. //Notice that the Write methodology opens the //stream with fmCreate. This will cause the //current file to be overwritten if Read then begin strm := TFileStream.Create( ExtractFilePath(ParamStr(0) + 'ConfigList.DAT', fmOpenRead); try strm.ReadComponent(lstConfigMain) finally strm.Free; end; end else begin strm := TFileStream.Create( ExtractFilePath(ParamStr(0) + 'ConfigLst.DAT', fmCreate); try strm.WriteComponent(lstConfigMain) finally strm.Free; end; end;end;
It’s quick and dirty and demonstrates how to implement persistence in your components from run to run of your program.